:root {
  color-scheme: light;
  --blue: #2f6fed;
  --blue-strong: #1e4fa8;
  --blue-deep: #163f8f;
  --blue-soft: #eef4ff;
  --blue-line: #8fb3f4;
  --red: #e5484d;
  --red-strong: #b4232e;
  --red-soft: #fff0f1;
  --red-line: #f0a1a8;
  --ink: #142f4a;
  --muted: #5a6e82;
  --line: #d7e3f4;
  --surface: #ffffff;
  --page: #f7faff;
  --shadow: 0 18px 50px rgba(30, 79, 168, 0.12);
  font-family: "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page);
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(47, 111, 237, 0.09), transparent 32rem),
    linear-gradient(180deg, #ffffff 0, var(--page) 30rem);
  -webkit-tap-highlight-color: transparent;
}

button,
a {
  font: inherit;
}

button {
  touch-action: manipulation;
}

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 12px max(18px, env(safe-area-inset-right)) 12px max(18px, env(safe-area-inset-left));
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.brand-icon {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
}

.brand-title {
  display: block;
  width: min(176px, 47vw);
  height: 36px;
  object-fit: contain;
  object-position: left center;
}

.demo-chip,
.eyebrow,
.status-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 800;
  letter-spacing: 0.055em;
}

.demo-chip {
  padding: 7px 11px;
  color: var(--blue-strong);
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
  font-size: 0.72rem;
}

.app-shell {
  width: min(100%, 1050px);
  margin: 0 auto;
  padding: clamp(14px, 3vw, 34px) max(12px, env(safe-area-inset-right)) max(30px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
}

.panel {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--blue-line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.intro-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(300px, 0.96fr);
  gap: clamp(30px, 6vw, 74px);
  align-items: center;
  min-height: min(690px, calc(100dvh - 136px));
  padding: clamp(30px, 6vw, 72px);
}

.intro-panel::before,
.final-panel::before,
.share-panel::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  top: -165px;
  right: -105px;
  border-radius: 50%;
  background: var(--blue-soft);
  pointer-events: none;
}

.intro-copy,
.demo-preview,
.intro-note,
.text-link {
  position: relative;
  z-index: 1;
}

.eyebrow {
  width: fit-content;
  padding: 7px 13px;
  color: var(--blue-strong);
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
  font-size: 0.78rem;
}

.intro-copy h1,
.final-panel h1,
.share-copy h1 {
  margin: 16px 0 18px;
  color: var(--ink);
  font-size: clamp(2.2rem, 5vw, 4.35rem);
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.intro-copy .intro-heading {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 13px;
  margin: 19px 0 22px;
  font-size: 1rem;
  line-height: 1;
  letter-spacing: normal;
}

.intro-brand-lockup {
  display: flex;
  align-items: center;
  gap: clamp(9px, 1.5vw, 14px);
  width: min(100%, 448px);
}

.intro-hero-icon {
  display: block;
  flex: 0 0 auto;
  width: clamp(48px, 7vw, 74px);
  height: auto;
}

.intro-hero-title {
  display: block;
  width: min(360px, calc(100% - 88px));
  height: auto;
}

.intro-heading-suffix {
  display: block;
  margin-left: clamp(72px, 8vw, 108px);
  color: var(--ink);
  font-size: clamp(2.25rem, 4.4vw, 3.55rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.045em;
}

.intro-duration {
  display: block;
  margin-top: 4px;
  white-space: nowrap;
}

.intro-guide-mobile-break {
  display: none;
}

.intro-lead {
  margin: 0;
  max-width: 34rem;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  font-weight: 700;
  line-height: 1.85;
}

.intro-guide {
  margin: 13px 0 25px;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.75;
}

.intro-guide strong {
  color: var(--blue-strong);
}

.primary-button,
.secondary-button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 24px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
}

.primary-button,
.copy-button {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 9px 22px rgba(47, 111, 237, 0.24);
}

.primary-button {
  width: min(100%, 310px);
  font-size: 1.05rem;
}

.primary-button:hover,
.copy-button:hover {
  background: #477ff0;
  box-shadow: 0 12px 26px rgba(47, 111, 237, 0.3);
  transform: translateY(-2px);
}

.primary-button:active,
.copy-button:active,
.secondary-button:active {
  transform: translateY(1px);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.7;
  transform: none;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--blue-line);
  outline-offset: 3px;
}

.no-login {
  margin: 11px 0 0;
  width: min(100%, 310px);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
}

.demo-preview {
  width: 100%;
  max-width: 390px;
  justify-self: center;
  padding: 20px;
  border-radius: 28px;
  background: #ffffff;
  border: 7px solid var(--ink);
  box-shadow: 0 22px 42px rgba(20, 47, 74, 0.2);
  transform: rotate(1.2deg);
}

.preview-topline {
  display: flex;
  justify-content: space-between;
  color: var(--blue-strong);
  font-size: 0.76rem;
  font-weight: 800;
}

.preview-question {
  min-height: 145px;
  margin: 14px 0;
  padding: 28px 17px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--ink);
  background: var(--blue-soft);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1.5;
  text-align: center;
}

.preview-timer {
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: #dfe9fa;
}

.preview-timer span {
  display: block;
  width: 74%;
  height: 100%;
  background: var(--blue);
}

.preview-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.preview-answer {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 15px;
  background: #ffffff;
  font-weight: 800;
}

.preview-answer b {
  font-family: Arial, sans-serif;
  font-size: 3.8rem;
  line-height: 0.9;
}

.preview-answer small {
  margin-top: 8px;
  color: var(--muted);
}

.preview-o {
  border: 2px solid var(--red-line);
}

.preview-o b {
  color: var(--red);
}

.preview-x {
  border: 2px solid var(--blue-line);
}

.preview-x b {
  color: var(--blue);
}

.intro-note {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.65;
}

.intro-note strong {
  color: var(--ink);
}

.text-link,
.secondary-link {
  color: var(--blue-strong);
  font-weight: 800;
  text-underline-offset: 4px;
}

.intro-panel > .text-link {
  grid-column: 1 / -1;
  justify-self: start;
  margin-top: -26px;
  font-size: 0.9rem;
}

.mobile-break {
  display: none;
}

.game-panel {
  width: min(100%, 940px);
  margin: 0 auto;
  padding: clamp(18px, 3.4vw, 36px);
}

.round-line,
.timer-copy,
.reveal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.round-number {
  color: var(--blue-strong);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 900;
}

.round-total {
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.status-chip {
  padding: 7px 12px;
  color: #ffffff;
  background: var(--blue);
  font-size: 0.75rem;
  white-space: nowrap;
}

.status-closed {
  color: var(--blue-strong);
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
}

.timer-block {
  margin: 16px 0 20px;
}

.timer-copy {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.timer-copy span:last-child {
  color: var(--ink);
  white-space: nowrap;
}

.timer-copy strong {
  display: inline-block;
  min-width: 1.4em;
  color: var(--blue);
  font-size: 1.45rem;
  line-height: 1;
  text-align: center;
}

.timer-track {
  height: 10px;
  overflow: hidden;
  border-radius: 99px;
  background: #dfe9fa;
}

.timer-track span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
  transform-origin: left center;
  will-change: transform;
}

.question-area {
  text-align: center;
}

.question-text {
  margin: 8px auto 20px;
  max-width: 850px;
  color: var(--ink);
  font-size: clamp(1.55rem, 3.3vw, 2.55rem);
  line-height: 1.45;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
}

.question-media {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 220px;
  max-height: min(42vh, 430px);
  margin: 0 auto 22px;
  overflow: hidden;
  border-radius: 18px;
  background: #f3f6fb;
  border: 1px solid var(--line);
}

.question-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: min(42vh, 430px);
  object-fit: contain;
}

.media-fallback {
  padding: 45px 20px;
  color: var(--muted);
  font-weight: 700;
}

.answer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(12px, 2vw, 20px);
}

.answer-card {
  position: relative;
  min-height: 142px;
  padding: 15px;
  border-radius: 20px;
  background: #ffffff;
  cursor: pointer;
  box-shadow: 0 5px 14px rgba(20, 47, 74, 0.06);
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.answer-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(20, 47, 74, 0.14);
}

.answer-card:active,
.answer-card.just-pressed {
  transform: translateY(1px) scale(0.985);
}

.answer-o {
  color: var(--red-strong);
  border: 2px solid var(--red-line);
}

.answer-o:hover,
.answer-o.is-selected {
  border-color: var(--red);
  background: var(--red-soft);
}

.answer-o.is-selected {
  box-shadow: 0 13px 25px rgba(229, 72, 77, 0.19);
  transform: translateY(-4px);
}

.answer-x {
  color: var(--blue-strong);
  border: 2px solid var(--blue-line);
}

.answer-x:hover,
.answer-x.is-selected {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.answer-x.is-selected {
  box-shadow: 0 13px 25px rgba(47, 111, 237, 0.2);
  transform: translateY(-4px);
}

.answer-symbol {
  display: block;
  font-family: Arial, sans-serif;
  font-size: clamp(4.2rem, 9vw, 6rem);
  font-weight: 500;
  line-height: 0.8;
}

.answer-name {
  display: block;
  margin-top: 9px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 900;
}

.selection-label {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 700;
}

.is-selected .selection-label {
  color: currentColor;
  font-weight: 900;
}

.change-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  text-align: center;
}

.reveal-media {
  max-height: min(32vh, 340px);
  margin-bottom: 18px;
}

.reveal-media img {
  max-height: min(32vh, 340px);
}

.answer-result {
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--blue-soft);
  text-align: center;
}

.answer-result.is-right {
  border-color: var(--red-line);
  background: var(--red-soft);
}

.verdict {
  margin: 0 0 7px;
  color: var(--ink);
  font-size: clamp(1.8rem, 4vw, 2.65rem);
  font-weight: 900;
}

.is-right .verdict {
  color: var(--red-strong);
}

.correct-answer {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  font-weight: 900;
}

.correct-answer span {
  display: inline-block;
  min-width: 1.15em;
  margin-left: 4px;
  font-family: Arial, sans-serif;
  font-size: 1.5em;
  line-height: 0.85;
  vertical-align: -0.08em;
}

.symbol-o {
  color: var(--red-strong);
}

.symbol-x {
  color: var(--blue-strong);
}

.symbol-none {
  color: var(--muted);
}

.explanation {
  margin: 18px auto 0;
  max-width: 760px;
  padding-top: 18px;
  border-top: 1px solid rgba(47, 111, 237, 0.2);
  color: var(--ink);
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  font-weight: 800;
  line-height: 1.75;
}

.score-now {
  width: fit-content;
  margin: 17px auto 0;
  padding: 8px 14px;
  border-radius: 99px;
  color: var(--blue-strong);
  background: #ffffff;
  font-size: 0.9rem;
}

.reveal-actions {
  margin-top: 15px;
}

.reveal-actions p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.secondary-button {
  min-height: 46px;
  padding: 10px 18px;
  color: var(--blue-strong);
  background: #ffffff;
  border-color: var(--blue-line);
}

.secondary-button:hover {
  color: #ffffff;
  background: var(--blue);
  transform: translateY(-2px);
}

.final-panel {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: clamp(28px, 6vw, 58px);
  text-align: center;
}

.final-panel > * {
  position: relative;
  z-index: 1;
}

.final-panel h1 {
  margin-bottom: 24px;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
}

.score-hero {
  padding: clamp(24px, 5vw, 38px);
  border-radius: 22px;
  background: var(--blue-soft);
  border: 1px solid var(--blue-line);
}

.score-label {
  display: block;
  color: var(--blue-strong);
  font-size: 0.87rem;
  font-weight: 900;
}

.score-hero > strong {
  display: block;
  margin: 8px 0 4px;
  color: var(--ink);
  font-size: clamp(2rem, 8vw, 4rem);
  line-height: 1;
}

.score-hero > strong b {
  color: var(--blue);
  font-size: 1.35em;
}

.score-hero > strong small {
  font-size: 0.48em;
}

.score-hero p {
  margin: 14px 0 0;
  color: var(--ink);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  font-weight: 900;
}

.result-list {
  display: grid;
  gap: 9px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.result-row {
  display: grid;
  grid-template-columns: 44px 62px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #ffffff;
}

.result-number {
  color: var(--blue-strong);
  font-weight: 900;
}

.result-judgement {
  font-size: 0.82rem;
  font-weight: 900;
}

.result-judgement.correct {
  color: var(--red-strong);
}

.result-judgement.incorrect {
  color: var(--muted);
}

.result-detail {
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
}

.result-detail b {
  font-size: 1.25rem;
}

.real-game-note {
  display: grid;
  gap: 5px;
  margin: 0 0 24px;
  padding: 17px;
  border-left: 4px solid var(--blue);
  color: var(--muted);
  background: #f7faff;
  font-size: 0.88rem;
  line-height: 1.65;
  text-align: left;
}

.real-game-note strong {
  color: var(--ink);
}

.final-panel .primary-button {
  display: flex;
  margin: 0 auto;
}

.secondary-link {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.9rem;
}

.share-panel {
  width: min(100%, 900px);
  margin: 0 auto;
  padding: clamp(26px, 6vw, 58px);
}

.share-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 330px);
  gap: clamp(28px, 6vw, 62px);
  align-items: center;
}

.share-copy h1 {
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.share-lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.url-box {
  display: block;
  width: 100%;
  margin-bottom: 12px;
  padding: 14px 16px;
  overflow-wrap: anywhere;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  background: #f7faff;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  user-select: all;
}

.copy-row {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 54px;
}

.copy-button {
  min-width: 145px;
}

.copy-status {
  color: var(--blue-strong);
  font-size: 0.85rem;
  font-weight: 900;
}

.back-link {
  display: inline-flex;
  margin-top: 28px;
  color: var(--blue-strong);
  font-weight: 800;
  text-underline-offset: 4px;
}

.qr-card {
  position: relative;
  z-index: 1;
  padding: 20px;
  border: 1px solid var(--blue-line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 15px 34px rgba(30, 79, 168, 0.13);
  text-align: center;
}

.qr-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
}

.qr-card strong,
.qr-card span {
  display: block;
}

.qr-card strong {
  margin-top: 8px;
  color: var(--ink);
}

.qr-card span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.qr-card .secondary-link {
  margin-top: 14px;
  font-size: 0.78rem;
}

.qr-only-body {
  min-height: 100dvh;
  background: #ffffff;
}

.qr-only-page {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100dvh;
  padding: max(24px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
}

.qr-only-code {
  display: block;
  width: min(86vmin, 760px);
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
}

.qr-focus-shell {
  display: grid;
  align-items: center;
  min-height: calc(100dvh - 68px);
}

.qr-focus-panel {
  width: min(100%, 840px);
  margin: 0 auto;
  padding: clamp(30px, 5vw, 54px);
}

.qr-focus-content {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  text-align: center;
}

.qr-focus-content h1 {
  margin: 15px 0 8px;
  color: var(--ink);
  font-size: clamp(2rem, 4.4vw, 3.35rem);
  line-height: 1.22;
  letter-spacing: -0.04em;
}

.qr-focus-lead {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: clamp(0.9rem, 1.7vw, 1.05rem);
  font-weight: 700;
  line-height: 1.75;
}

.qr-focus-card {
  width: min(72vmin, 370px);
  padding: clamp(14px, 2.3vw, 21px);
  border: 1px solid var(--blue-line);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 16px 38px rgba(30, 79, 168, 0.15);
}

.qr-focus-code {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
}

.qr-focus-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 19px;
}

.qr-focus-meta span {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue-strong);
  background: var(--blue-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.qr-focus-back {
  margin-top: 19px;
  color: var(--blue-strong);
  font-size: 0.86rem;
  font-weight: 800;
  text-underline-offset: 4px;
}

@media print {
  .qr-only-page {
    min-height: 100vh;
    padding: 0;
  }

  .qr-only-code {
    width: min(90vw, 90vh);
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 60px;
    padding-top: 9px;
    padding-bottom: 9px;
  }

  .brand-icon {
    width: 33px;
    height: 33px;
  }

  .brand-title {
    width: min(150px, 45vw);
    height: 31px;
  }

  .app-shell {
    padding-top: 12px;
  }

  .panel {
    border-radius: 19px;
  }

  .intro-panel {
    display: block;
    min-height: 0;
    padding: 27px 20px 25px;
    text-align: center;
  }

  .intro-copy h1 {
    margin-top: 13px;
    font-size: clamp(2rem, 10.5vw, 2.8rem);
  }

  .intro-copy .intro-heading {
    align-items: center;
    gap: 10px;
    margin: 17px 0 18px;
  }

  .intro-brand-lockup {
    justify-content: center;
    width: 100%;
  }

  .intro-heading-suffix {
    margin-left: clamp(46px, 14vw, 60px);
    font-size: clamp(2rem, 10vw, 2.65rem);
  }

  .mobile-break {
    display: initial;
  }

  .eyebrow,
  .intro-copy .primary-button,
  .no-login {
    margin-left: auto;
    margin-right: auto;
  }

  .intro-lead {
    font-size: 1rem;
    line-height: 1.75;
  }

  .intro-guide {
    margin-bottom: 20px;
    font-size: 0.9rem;
  }

  .intro-guide-mobile-break {
    display: initial;
  }

  .demo-preview {
    max-width: 310px;
    margin: 30px auto 25px;
    padding: 15px;
    border-width: 6px;
    border-radius: 24px;
    transform: none;
  }

  .preview-question {
    min-height: 105px;
    padding: 20px 12px;
    font-size: 1.08rem;
  }

  .preview-answer {
    min-height: 87px;
  }

  .preview-answer b {
    font-size: 3rem;
  }

  .intro-note {
    display: grid;
    margin-top: 0;
    padding-top: 19px;
    text-align: left;
  }

  .intro-panel > .text-link {
    display: inline-block;
    margin-top: 17px;
  }

  .game-panel {
    padding: 17px 14px 20px;
  }

  .timer-block {
    margin: 13px 0 15px;
  }

  .timer-copy span:first-child {
    max-width: 64%;
    line-height: 1.45;
  }

  .question-text {
    margin: 5px auto 14px;
    font-size: clamp(1.35rem, 6.2vw, 1.8rem);
    line-height: 1.4;
  }

  .question-media {
    min-height: 150px;
    max-height: min(31vh, 270px);
    margin-bottom: 15px;
    border-radius: 14px;
  }

  .question-media img {
    max-height: min(31vh, 270px);
  }

  .answer-grid {
    gap: 10px;
  }

  .answer-card {
    min-height: 116px;
    padding: 12px 7px;
    border-radius: 16px;
  }

  .answer-symbol {
    font-size: clamp(3.7rem, 18vw, 4.8rem);
  }

  .answer-name {
    margin-top: 7px;
    font-size: 0.9rem;
  }

  .selection-label {
    font-size: 0.66rem;
  }

  .change-note {
    margin-top: 9px;
  }

  .reveal-panel .question-text {
    font-size: clamp(1.15rem, 5vw, 1.5rem);
  }

  .reveal-media {
    min-height: 115px;
    max-height: min(23vh, 205px);
    margin-bottom: 12px;
  }

  .reveal-media img {
    max-height: min(23vh, 205px);
  }

  .answer-result {
    padding: 18px 13px;
    border-radius: 16px;
  }

  .explanation {
    margin-top: 13px;
    padding-top: 13px;
    font-size: 1rem;
    line-height: 1.65;
  }

  .reveal-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 9px;
    text-align: center;
  }

  .secondary-button {
    width: 100%;
  }

  .final-panel {
    padding: 28px 17px;
  }

  .result-row {
    grid-template-columns: 36px 55px minmax(0, 1fr);
    gap: 7px;
    padding: 8px 9px;
  }

  .result-detail {
    font-size: 0.76rem;
  }

  .result-divider {
    display: none;
  }

  .share-panel {
    padding: 27px 19px;
  }

  .share-grid {
    grid-template-columns: 1fr;
  }

  .share-copy {
    text-align: center;
  }

  .share-copy .eyebrow {
    margin: 0 auto;
  }

  .copy-row {
    justify-content: center;
    flex-wrap: wrap;
  }

  .qr-card {
    width: min(100%, 330px);
    margin: 0 auto;
  }

  .qr-focus-shell {
    min-height: calc(100dvh - 60px);
  }

  .qr-focus-panel {
    padding: 27px 17px 25px;
  }

  .qr-focus-content h1 {
    margin-top: 13px;
    font-size: clamp(1.85rem, 9vw, 2.35rem);
  }

  .qr-focus-lead {
    max-width: 18rem;
    margin-bottom: 16px;
  }

  .qr-focus-card {
    width: min(78vw, 330px);
    border-radius: 20px;
  }
}

@media (max-width: 370px) {
  .demo-chip {
    padding: 6px 8px;
  }

  .brand {
    gap: 6px;
  }

  .brand-title {
    width: 128px;
  }

  .answer-card {
    min-height: 108px;
  }

  .result-row {
    grid-template-columns: 32px 49px minmax(0, 1fr);
  }

  .result-detail {
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}